Weekly Information about Bright Comets (2001 Oct. 20: South)

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Updated on November 13, 2001
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere.

Please see also the Comet Rendezvous Calendar, Latest Pictures of Comets.

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* 19P/Borrelly


It keeps 10 mag until mid November in the morning sky.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   9 26.65   26  6.8   1.380   1.418    71   10.3     46.5  76.7   3:42 (230,  8)  
Oct. 27   9 49.95   27 18.6   1.362   1.443    73   10.5     45.0  76.9   3:32 (230,  6)  

* C/2000 WM1 ( LINEAR )


It was 11-12 mag visually in late September. It brightens rapidly after this, will be 10 mag in late October and 6.5 mag in late November.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   4 52.42   50 55.8   1.144   1.885   123   11.0     10.2 248.4   2:59 (180,  4)  
Oct. 27   4 42.62   50 14.0   0.965   1.780   130   10.4     19.7 244.0   2:22 (180,  5)  

* P/2001 Q2 ( Petriew )


It will fade out after this and becomes fainter than 13 mag in December.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   9 29.13    2 33.0   1.204   1.170    63   11.1     40.0 121.7   3:42 (248, 24)  
Oct. 27   9 44.13    0 10.5   1.230   1.228    66   11.3     36.1 123.0   3:32 (250, 26)  

* C/2000 SV74 ( LINEAR )


It will be observable at 12.5 mag until 2002 September.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   0 44.62   58 20.6   3.229   3.952   130   12.5     20.0 283.2  22:46 (180, -3)  
Oct. 27   0 27.26   58 42.3   3.207   3.925   130   12.4     19.3 275.5  22:02 (180, -4)  

* P/2001 Q6 ( NEAT )


New periodic comet. It bursted out and brightened 1-2 mag. Akimasa Nakamura observed it at 13.6 mag on Sept. 28. It is at opposition and reach to 13 mag in October.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   2 27.87   73 17.3   0.678   1.434   116   13.2     91.6 330.3   0:39 (180,-18)  
Oct. 27   0 16.93   80 10.4   0.714   1.419   111   13.3     78.2 297.7  21:38 (180,-25)  

* C/1999 Y1 ( LINEAR )


It locates high in the Southern Hemisphere. Northern people can never see it again. Some reported this at 11-12 mag.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  21 44.90  -53 34.0   3.399   3.693    99   13.5     14.0 272.6  19:48 (  0, 71)  
Oct. 27  21 35.07  -53 24.4   3.550   3.729    92   13.6     11.3 279.9  19:56 ( 20, 70)  

* 29P/Schwassmann-Wachmann 1


It was observed at 11.5 mag visually in late August, but now it is not in outburst.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  18 48.69  -26 28.7   6.086   5.895    74   13.7      6.8  75.6  19:47 ( 91, 52)  
Oct. 27  18 52.35  -26 16.6   6.190   5.892    68   13.7      7.7  76.7  19:56 ( 86, 45)  

* P/2001 MD7 ( LINEAR )


It reaches to 13.5 mag in November. It locates in the evening sky until 2002 April.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  19 34.92  -30 25.5   1.032   1.357    83   13.9     36.8  97.2  19:47 ( 91, 63)  
Oct. 27  19 55.76  -30 48.7   1.038   1.326    81   13.8     40.3  93.1  19:56 ( 88, 60)  

* C/2000 CT54 ( LINEAR )


It is not observable in the Northern Hemisphere until when it locates low in the evening sky at 15 mag in December.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  22 21.32  -59 48.3   3.055   3.369    99   14.2     20.2 358.7  20:25 (  0, 65)  
Oct. 27  22 21.68  -57 25.5   3.138   3.393    96   14.3     20.6   3.5  19:58 (  0, 68)  

* C/1999 U4 ( Catalina-Skiff )


It was 16.1 mag on Aug. 22 by KenIchi Kadota. It is observable until 2002 autumn at 15 mag.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   9 50.37   68 38.7   4.842   4.916    88   14.8     12.7  71.0   3:42 (201,-24)  
Oct. 27  10  5.52   69  7.9   4.782   4.915    91   14.8     12.1  69.1   3:32 (200,-24)  

* 51P/Harrington


KenIchi Kadota observed it at 14.3 mag on Sept. 23. It bursted out and brightened 2.5 mag. Now it is 14.5 mag.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   5 55.65   12 52.2   1.403   2.059   117   15.1      2.5 113.6   3:42 (186, 42)  
Oct. 27   5 55.79   12 46.6   1.376   2.100   123   15.4      1.8 250.3   3:32 (181, 42)  

* C/1995 O1 ( Hale-Bopp )


Only southern people can observe it. Northern people can never see it again. Observations since 2001 July reported it between 17.5 and 20.4 mag, much fainter than the ephemeris.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   6 34.51  -80  1.4  14.547  14.452    82   15.4      4.4 199.9   3:42 (356, 45)  
Oct. 27   6 29.67  -80 29.4  14.612  14.495    81   15.4      4.4 207.4   3:32 (358, 44)  

* C/1997 BA6 ( Spacewatch )


After the small outburst up to 15 mag in July, it keeps the brightness still in mid September.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  20 48.44   -1 29.1   6.476   6.831   106   16.0      1.5 292.5  19:47 (156, 54)  
Oct. 27  20 48.04   -1 24.4   6.634   6.877   100   16.1      0.8 337.5  19:56 (143, 50)  

* 16P/Brooks 2


Fading now. It will be fainter than 18 mag in January.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   5 21.90   15 26.2   1.255   2.005   125   16.0      5.6 138.7   3:28 (180, 40)  
Oct. 27   5 22.76   14 56.3   1.224   2.029   132   16.1      4.3 182.0   3:02 (180, 40)  

* 47P/Ashbrook-Jackson


It keeps 16 mag until late October, then fades out.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   5 45.86   37 58.5   2.385   2.991   118   16.1      5.3 359.0   3:42 (182, 17)  
Oct. 27   5 45.05   38 34.9   2.333   3.017   125   16.2      5.7 332.8   3:24 (180, 16)  

* 61P/Shajn-Schaldach


It must be bright enough, but no observations reported since 200 Sept. 20.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   6 17.65   15 40.2   2.042   2.588   112   16.4      6.2 117.1   3:42 (193, 38)  
Oct. 27   6 19.65   15 20.8   1.983   2.608   118   16.4      3.8 134.8   3:32 (188, 39)  

* C/2001 N2 ( LINEAR )


It will be 14.5 mag in 2002 July.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  20 24.51   28 18.6   3.690   4.060   104   16.4     19.5 215.9  19:47 (161, 24)  
Oct. 27  20 19.13   26 29.8   3.740   4.011    98   16.4     17.7 210.8  19:56 (151, 22)  

* 2001 OG108


New asteroid with 50-year period. It closes to the earth down to 0.55 AU in 2001 April and reaches to 14 mag.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  23 30.75   22 57.7   1.457   2.355   146   16.5     43.8 272.9  21:33 (180, 32)  
Oct. 27  23  9.02   23  4.6   1.446   2.275   136   16.5     41.7 270.1  20:44 (180, 32)  

* C/1999 K5 ( LINEAR )


Appearing at dawn. It had been hardly fading for almost one year after the perihelion passage in 2000 July, and was bright at 15 mag in 2001 May.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   7 34.74  -20 18.3   5.319   5.367    87   16.6      2.4 218.9   3:42 (249, 60)  
Oct. 27   7 33.64  -20 30.7   5.273   5.414    92   16.6      3.3 240.6   3:32 (243, 64)  

* 65P/Gunn


It will be 15 mag in next spring at opposition.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  10 52.27   16 44.2   4.370   3.796    49   17.0     15.6 106.8   3:42 (250, -1)  
Oct. 27  10 59.42   16 13.6   4.269   3.777    54   16.9     15.0 106.2   3:32 (249,  1)  

* C/2000 K2 ( LINEAR )


It did not begin to fade out even after the perihelion passage. It had been at the conjunction for a while, and still keeps the brightness.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   1 50.86    3 45.7   3.541   4.531   172   16.9     10.0 230.4  23:54 (180, 51)  
Oct. 27   1 47.33    3  2.9   3.605   4.585   169   17.1      9.4 231.5  23:23 (180, 52)  

* C/2001 B2 ( NEAT )


It keeps 17 mag until 2002 March.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  10 47.30    1 46.0   6.792   6.120    44   17.0      2.5  72.8   3:42 (262,  9)  
Oct. 27  10 48.24    1 52.0   6.721   6.145    51   17.0      1.9  59.2   3:32 (259, 12)  

* 44P/Reinmuth 2


Fading. It will be fainter than 18 mag in January.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   5 47.30   30 11.8   2.047   2.678   119   17.0      0.8 326.5   3:42 (183, 25)  
Oct. 27   5 46.29   30 15.3   2.002   2.712   126   17.0      3.3 276.2   3:25 (180, 25)  

* P/2001 R6 ( LINEAR-Skiff )


New periodic comet. It keeps 17 mag until November, then will fade out.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   0 58.75  -21 46.5   1.213   2.116   146   17.0     12.9 310.8  23:02 (180, 77)  
Oct. 27   0 54.25  -20 38.6   1.240   2.115   142   17.0     13.5 323.5  22:30 (180, 76)  

* C/2001 K3 ( Skiff )


It will fade out after this and be fainter than 18 mag in December.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  19 45.80   16 44.5   3.302   3.524    94   17.1      7.1  83.8  19:47 (147, 31)  
Oct. 27  19 49.63   16 50.9   3.417   3.557    89   17.2      8.7  82.8  19:56 (139, 27)  

* P/2001 Q5 ( LINEAR-NEAT )


New periodic comet. It will keep 17 mag until late October, but then fades out.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   1 44.15   27 41.8   1.301   2.270   162   17.1     12.5 265.1  23:47 (180, 27)  
Oct. 27   1 37.70   27 28.8   1.322   2.293   163   17.2     12.1 257.8  23:13 (180, 28)  

* 151P/2001 M1 ( Helin )


Rapidly brightened and reached to 17 mag. Now it is at the peak and it will fade out after this.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  23 49.65   -6 35.9   1.640   2.540   147   17.2      2.7 236.9  21:53 (180, 62)  
Oct. 27  23 49.08   -6 41.8   1.695   2.545   140   17.3      0.2 210.9  21:25 (180, 62)  

* P/2001 R1 ( LONEOS )


New periodic comet. It will reach to 16 mag in February.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  21 21.66  -23 35.3   1.318   1.889   108   17.4      9.6  35.2  19:47 (156, 78)  
Oct. 27  21 25.45  -22 35.8   1.344   1.841   102   17.3     13.1  45.8  19:56 (133, 73)  

* C/1999 T1 ( McNaught-Hartley )


Fading gradually. It locates in the northern sky and the northern people can observe it until it disappears.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20  17 53.84   50 59.1   4.201   4.184    82   17.3     17.4 128.4  19:47 (147,-10)  
Oct. 27  18  3.99   49 46.0   4.289   4.254    81   17.5     17.3 125.3  19:56 (144,-12)  

* 31P/Schwassmann-Wachmann 2


It will be observable at 17 mag in January and February.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 20   9  3.38   17  2.4   3.579   3.429    73   18.0     14.0 103.2   3:42 (232, 18)  
Oct. 27   9  9.73   16 41.1   3.478   3.426    78   17.9     12.8 103.1   3:32 (231, 20)  

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